3MXR:
reference: Novel insights into the mode of inhibition of class A SHV-1 {beta}-lactamase revealed by boronic acid transition state inhibitors., Ke W, Sampson JM, Ori C, Prati F, Drawz SM, Bethel CR, Bonomo RA, van den Akker F, Antimicrob Agents Chemother. 2010 Nov 1. PMID: 21041505

This OCA Structure page
uses Jmol, developed by the Jmol Development Team (documentation).